Need help with my CK2 games not showing up on my paradox games

[Noblej7]

I linked my account and even tried the code i got for sunset invasion but its not showing up and the code came back as not found. what do i do? also my other codes disappeared for some reason

 

[AndrewT]

Go into
https://forum.paradoxplaza.com/forum/index.php?account/owneditems
and hit Sync Owned Items.